Coating tungsten product

A coating and coating layer technology, applied in the field of high-density tungsten substrates, can solve the problems of perspiration corrosion, poor oxidation resistance, dull color, etc., and achieve the effect of improving oxidation resistance, low cost, and simple preparation

Inactive Publication Date: 2008-06-11
CENT SOUTH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Uncoated tungsten has defects such as non-wear resistance, poo

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0008] TiN coated pure tungsten.

[0009] Using pure tungsten with a relative density of 99.9% of the theoretical density of pure tungsten as the base material, the TiN coating is coated by CVD or PVD, and the thickness of the coating is 3 μm.

Embodiment 2

[0011] Cu(balance)-(15-45)%Zn-(0.1-1.5)%Ni-(0.5-1)%Al 2 o 3 Alloy coated pure tungsten.

[0012] Use pure tungsten with a relative density of 99.9% of the theoretical density of pure tungsten as the substrate, and coat Cu (remainder)-(15-45)% Zn-(0.1-1.5)% Ni-(0.5-1)% by PVD method Al 2 o 3 Alloy coating, the thickness of the coating is: 30μm.

Embodiment 3

[0014] TiN coating W(balance)-2%Ni-1%Fe alloy.

[0015] The W (remainder)-2%Ni-1%Fe alloy whose relative density is 97% of the theoretical density of pure tungsten is used as the substrate, and the TiN coating is coated by CVD or PVD, and the thickness of the coating is 30 μm.

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Abstract

The invention discloses a coating tungsten material, including tungsten substrate. A coating layer with the thickness of 3-30 mu m, comprising TiN or alloy with Cu (residue)-15-45% Zn-0.1-1.5% Ni-0.5-1% Al2O3 is coated on the tungsten substrate. The tungsten substrate is compose of pure tungsten or alloy with W (residue)-2% Ni-1% Fe. The relative density of the tungsten substrate is 97-99% as large as the theoretical density of the pure tungsten. The coating tungsten material of the invention effectively improves the comprehensive usage properties of the surface of the tungsten substrate, such as oxidation resistance, wear resistance, perspiration and corrosion resistance and color brilliance on the condition of keeping the high relative density of the tungsten substrate, and thereby the tungsten substrate with high density is applied widely. The invention has the advantages of simple product process, low cost, adaptability for regular manufacture technique.

Description

technical field [0001] The invention relates to a tungsten material, in particular to a coated high-density tungsten base material. Background technique [0002] High-density tungsten-based materials are widely used in the fields of national defense and military industry, machinery and electronics, aerospace, metallurgy and mining, petroleum and coal, clocks and accessories. Uncoated tungsten materials have defects such as non-wear resistance, poor oxidation resistance, perspiration corrosion, and dull color. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a coated tungsten material with high comprehensive performance such as oxidation resistance, wear resistance, perspiration corrosion resistance and bright color. [0004] In order to solve the above-mentioned technical problems, the coated tungsten material provided by the present invention includes a tungsten base material, and the composition of the tungsten...

Claims

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Application Information

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IPC IPC(8): B32B15/04B32B5/14
Inventor 刘沙
Owner CENT SOUTH UNIV
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